INIBIOMA   20415
INSTITUTO DE INVESTIGACIONES EN BIODIVERSIDAD Y MEDIOAMBIENTE
Unidad Ejecutora - UE
capítulos de libros
Título:
Disruption of Pollination Services by Invasive Pollinator Species
Autor/es:
SAEZ AGUSTÍN; MORALES CAROLINA LAURA; AIZEN MARCELO A.; GARIBALDI LUCAS A.
Libro:
Impact of Biological Invasions on Ecosystem Services
Editorial:
Springer
Referencias:
Año: 2017; p. 203 - 220
Resumen:
Plant?pollinator interactions and associated pollination services areessential for crop production and the integrity of terrestrial ecosystem services.Introduced pollinators, in particular social bees such as honeybees and bumblebees,have become invaders in many regions of the world, strongly affecting the pollinationof native, cultivated, and non-native plants. These effects can be direct, wheninvaders interact with local flowering plants, or indirect, when invaders modify theinteraction of native pollinators with flowering plants. Direct effects on pollinationdepend on whether the plant benefits from the flower visits are greater than theircosts, a relationship that can be density dependent. Shifts from mutualism to antagonismoccur when invasive pollinators reach extremely high densities, because theinteraction costs exceed the benefits. Indirect effects depend on whether pollinatorinvaders alter the benefit?cost ratio of native pollinator visits, displace them, ortrigger reductions in native pollinator diversity. Through a literature review, wefound that the impacts of invasive pollinators on pollination were predominantlynegative for native plants, mixed for crops, and positive for invasive plants.Furthermore, they can synergistically interact with other stressors on pollinationsuch as climate change and habitat disturbance. Although invasive pollinators canback up pollination of some native plants in highly disturbed habitats, and somecrops in intensively modified agro-ecosystems, they cannot replace the role of adiverse pollinator assemblage for wild plant reproduction and crop yield. Hence,managing agro-ecosystemsfor enhancing wild pollinator diversity, and avoidingfurther introductions of non-native pollinators, are realistic cost-effective measuresfor the provision and stability of pollination services.